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  <title>Get size of shared memory block</title>

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<div class="refnamediv">
 <h1 class="refname">shmop_size</h1>
 <p class="verinfo">(PHP 4 &gt;= 4.0.4, PHP 5)</p><p class="refpurpose"><span class="refname">shmop_size</span> &mdash; <span class="dc-title">Get size of shared memory block</span></p>

</div>
<div class="refsect1 description" id="refsect1-function.shmop-size-description">
 <h3 class="title">说明</h3>
 <div class="methodsynopsis dc-description">
  <span class="type">int</span> <span class="methodname"><strong>shmop_size</strong></span>
   ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$shmid</code></span>
  )</div>

  <p class="para rdfs-comment">
   <span class="function"><strong>shmop_size()</strong></span> is used to get the size, in bytes of the
   shared memory block.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.shmop-size-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">shmid</code></em></dt>

     <dd>

      <p class="para">
       The shared memory block identifier created by 
       <span class="function"><a href="function.shmop-open.html" class="function">shmop_open()</a></span>
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.shmop-size-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns an int, which represents the number of bytes the shared memory
   block occupies.
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.shmop-size-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3634">
    <p><strong>Example #1 Getting the size of the shared memory block</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$shm_size&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">shmop_size</span><span style="color: #007700">(</span><span style="color: #0000BB">$shm_id</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
  <p class="para">
   This example will put the size of shared memory block identified by
   <em>$shm_id</em> into <em>$shm_size</em>.
  </p>
 </div>

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